EP1832012A1 - Dispositif a diversite d'antenne - Google Patents
Dispositif a diversite d'antenneInfo
- Publication number
- EP1832012A1 EP1832012A1 EP05826788A EP05826788A EP1832012A1 EP 1832012 A1 EP1832012 A1 EP 1832012A1 EP 05826788 A EP05826788 A EP 05826788A EP 05826788 A EP05826788 A EP 05826788A EP 1832012 A1 EP1832012 A1 EP 1832012A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- antenna
- diversity
- frequency
- signal
- antennas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
Definitions
- the individual antenna signals are fed to an evaluation circuit for evaluating the reception quality of the signals. Most of the sum signal of all diversity antenna signals or the strongest single signal of the receiving device is supplied (DE 101 09 359 C2).
- An antenna-side frequency conversion which converts at least one reception band of an antenna so that the reception bands of the diversity antennas are adjacent to one another with respect to the frequency spectrum, makes it possible to transmit a plurality of diversity antenna signals via a common transmission medium, in particular a coaxial cable.
- the antenna signal of each antenna was fed via a separate cable to the receiver.
- only a coaxial cable is necessary.
- the extra effort is not very high. Although it is the antenna side, a frequency converter and a crossover necessary, but if preferably the local oscillator signal of the receiver is used for implementation, which can be advantageous also transmitted via the antenna feed in the opposite direction to the signals of the diversity antennas, the frequency conversion of the already antenna side is unnecessary converted signal in the receiver. It can be implemented on the antenna side directly in the required intermediate frequency position.
- two antennas 10 and 11 are provided for antenna diversity operation.
- the diversity operation and use of the principle according to the invention can also be carried out with more than two antennas.
- Reception bands of the antennas are denoted by FM1 and FM2.
- the reception bands are the same.
- a differentiation in FM1 and FM2 takes place here only to clarify which antenna the respective received signal comes from (FM1 of antenna 11 and FM 2 of antenna 12).
- the received signals may differ from each other, which is precisely what the
- the unit 2 is provided by means of which at least one of the receiving bands FMl or FM2 is implemented so that the frequency bands of the diversity antenna with respect to the frequency spectrum are adjacent to each other, i. do not overlap in frequency or only insignificantly.
- the reception band FM2 of the antenna 12 is converted by means of the mixer 3 into the intermediate frequency position ZF2.
- the unreacted signal FMl is combined with the converted signal ZF2 via the crossover 4 and together via the transmission medium 5, preferably a coaxial cable to the receiver 6 and a
- the crossover 4 consists of a band pass 41 for the signal FMl and a band pass 42 for the signal ZF2.
- the signal ZF2 can in the receiver 6 without further implementation are further processed when the mixing frequency for the mixer 3 is selected accordingly.
- the signal FM1 is converted in the receiver 6 by means of the mixer 8 in the usual intermediate frequency position ZFl.
- the mixing frequency of the mixer 8 is the output signal LO of the local oscillator.
- the output signal LO of the local oscillator 9 is fed via the bandpass 61 in the coaxial cable 5 in the opposite direction to the tapped by the antennas 11 and 12 and processed in the unit 2 to the receiver 6 transmitted signals FMl and ZF2.
- the LO signal is kept gar ⁇ ltert antenna side and is available as a mixed signal for the mixer 3 available.
- the other signals can also be implemented without much effort, so that they come to rest in the frequency spectrum next to the other diversity signals.
- the necessary Umsetzfrequenzen can simply from the
- LO signal can be derived by division or multiplication.
- the frequency division / multiplication is advantageously carried out only in the unit 2 in order to limit the filter effort. There are then possibly even more filters / Bandpass Anlagenen necessary.
- the filter or bandpass 42 for the IF is fixed in frequency. This applies with a suitable choice of the IF, e.g. 30 MHz, i. at an FM frequency 88-108 MHz of an LO frequency 78-58 MHz, also for the filters or bandpass 41 for FM and bandpass 21 and 61 for LO. If the IF is chosen to be lower, as is usual today 10 MHz, i. at an FM frequency of 88-108 MHz and an LO frequency of 98-78 MHz, the corresponding filters must be tunable.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radio Transmission System (AREA)
- Details Of Aerials (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004062000A DE102004062000A1 (de) | 2004-12-23 | 2004-12-23 | Antennendiversity-Einrichtung |
| PCT/EP2005/056140 WO2006069858A1 (fr) | 2004-12-23 | 2005-11-22 | Dispositif a diversite d'antenne |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1832012A1 true EP1832012A1 (fr) | 2007-09-12 |
| EP1832012B1 EP1832012B1 (fr) | 2011-01-05 |
Family
ID=35734416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP05826788A Expired - Lifetime EP1832012B1 (fr) | 2004-12-23 | 2005-11-22 | Dispositif a diversite d'antenne |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20080311874A1 (fr) |
| EP (1) | EP1832012B1 (fr) |
| JP (1) | JP2008524948A (fr) |
| AT (1) | ATE494673T1 (fr) |
| DE (2) | DE102004062000A1 (fr) |
| WO (1) | WO2006069858A1 (fr) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007061739A1 (de) | 2007-12-20 | 2009-06-25 | Robert Bosch Gmbh | Verfahren zur Verbesserung des Empfangs sowie Empfangssystem |
| DE102009047722A1 (de) | 2009-12-09 | 2011-06-16 | Robert Bosch Gmbh | Verfahren zum Bereitstellen mindestens eines Ausgangssignals |
| DE102015011875A1 (de) * | 2015-09-10 | 2017-03-16 | Kathrein-Werke Kg | Einrichtung zum Senden und Empfangen von Mobilfunk-Signalen mittels einer stationären Antenne |
| US9813659B1 (en) | 2016-05-11 | 2017-11-07 | Drone Racing League, Inc. | Diversity receiver |
| DE102017203993A1 (de) | 2017-03-10 | 2018-09-13 | Bayerische Motoren Werke Aktiengesellschaft | Funkempfangssystem für digitales Radio und Fernsehen |
| US10737781B2 (en) | 2017-09-14 | 2020-08-11 | Drone Racing League, Inc. | Three-dimensional pathway tracking system |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0213020A (ja) * | 1988-06-29 | 1990-01-17 | Alps Electric Co Ltd | 衛星通信受信装置 |
| JPH02260925A (ja) * | 1989-03-31 | 1990-10-23 | Toshiba Lighting & Technol Corp | ダイバシティ受信装置 |
| US5067173A (en) * | 1990-12-20 | 1991-11-19 | At&T Bell Laboratories | Microcellular communications system using space diversity reception |
| US5742583A (en) * | 1994-11-03 | 1998-04-21 | Omnipoint Corporation | Antenna diversity techniques |
| US5850400A (en) * | 1995-04-27 | 1998-12-15 | Next Level Communications | System, method, and apparatus for bidirectional transport of digital data between a digital network and a plurality of devices |
| JPH11122157A (ja) * | 1997-10-16 | 1999-04-30 | Kokusai Electric Co Ltd | 無線基地局システム |
| US6353490B1 (en) * | 1999-05-12 | 2002-03-05 | Quintech, Inc. | C/N performance of broadband two-way transmission of RF signals over transmission mediums with limited bandwidth |
| JP2000341153A (ja) * | 1999-05-25 | 2000-12-08 | Toyota Motor Corp | メディア統合型受信システム |
| KR100376298B1 (ko) * | 1999-09-13 | 2003-03-17 | 가부시끼가이샤 도시바 | 무선통신시스템 |
| JP4151931B2 (ja) * | 1999-09-13 | 2008-09-17 | 株式会社東芝 | 無線通信システム、無線基地局および制御局 |
| JP3594862B2 (ja) * | 1999-12-28 | 2004-12-02 | 株式会社エヌ・ティ・ティ・ドコモ | 無線基地局システム、統括局及び該統括局における信号処理方法 |
| US20030027540A1 (en) * | 2001-07-31 | 2003-02-06 | Da Torre Serge Barbosa | Diversity combiner and associated methods |
| US8010061B2 (en) * | 2002-12-24 | 2011-08-30 | Agere Systems, Inc. | Combining multimedia signaling and wireless network signaling on a common communication medium |
| CN1926716B (zh) * | 2004-03-11 | 2012-07-04 | 艾利森电话股份有限公司 | 天线分集系统 |
| US7729726B2 (en) * | 2004-03-26 | 2010-06-01 | Nortel Networks Limited | Feeder cable reduction |
-
2004
- 2004-12-23 DE DE102004062000A patent/DE102004062000A1/de not_active Withdrawn
-
2005
- 2005-11-22 WO PCT/EP2005/056140 patent/WO2006069858A1/fr not_active Ceased
- 2005-11-22 US US11/794,279 patent/US20080311874A1/en not_active Abandoned
- 2005-11-22 DE DE502005010819T patent/DE502005010819D1/de not_active Expired - Lifetime
- 2005-11-22 AT AT05826788T patent/ATE494673T1/de active
- 2005-11-22 JP JP2007547425A patent/JP2008524948A/ja active Pending
- 2005-11-22 EP EP05826788A patent/EP1832012B1/fr not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2006069858A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1832012B1 (fr) | 2011-01-05 |
| JP2008524948A (ja) | 2008-07-10 |
| ATE494673T1 (de) | 2011-01-15 |
| US20080311874A1 (en) | 2008-12-18 |
| DE502005010819D1 (de) | 2011-02-17 |
| WO2006069858A1 (fr) | 2006-07-06 |
| DE102004062000A1 (de) | 2006-07-06 |
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